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Whirling Dun

Whirlng Dun

Fountains of Youth – Classic trout flies that have withstood the test of time … flies that remain “forever young”

by Rusty Dunn

“Match the hatch” is a cornerstone of fly fishing. Suc­cessful flies are those that imitate food of a feeding trout, but how exact must that imitation be? A crude approxi­mation? A detailed facsimile? Opinions vary widely and are often strongly held. “Presentationists” main­tain that the fly itself is of lesser importance, be­cause success lies in how an angler presents the fly. They emphasize imitation of insect behav­ior over insect form (profile, color, size, anatomy, materials, etc.). “Imitationists”, on the other hand, main­tain that flies should mirror the natural in detail. They assume that presentations are excellent but believe that trout are more often deceived when a fly closely mimics the nat­ural. Imitationists emphasize insect form over insect behav­ior. Which group is correct? That’s for you to decide. Better start deliberations soon, how­­ever, because you may be puzzled and uncertain even after decades of thoughtful experimentation.

Consider two examples of the presenta­tion vs. imita­tion debate. Ernie Schwiebert (1931-2005) was one of America’s most knowledgeable and accomplished fly anglers. His 1955 book Matching the Hatch in­cludes 101 flies needed onstream to imi­tate com­mon mayflies. His 1978 article in Fly Fisher­man magazine includes 40 flies to imitate common ants alone! Even com­mitted imitationists might question Schwiebert’s need for such abun­dance. At the other end of the spec­trum, George La Branche (1875-1961) is widely ac­knowledged as a founder of American presentation­ists. His influential 1914 book The Dry Fly and Fast Water argues that action and movement of a fly is paramount, and the specific fly itself is much less important:

“A great part of the imitation must be produced by the angler himself while actually fishing the stream.”

La Branche’s book contains only eight fly patterns, about which he comments:

“I rarely use over six. If I were com­pelled to do so, I could get along very well with one – the Whirling Dun.”

One fly for all situa­tions? Even committed presenta­tionists might ques­tion the sparse­ness of La Branche’s fly box. Fortu­nately, most anglers are somewhere in the middle of the imitation vs. presen­tation spectrum, and you must find your own place of comfort.

La Branche’s favorite fly, the Whirling Dun, dates to the very beginnings of angling. Charles Cotton de­scribed the first Whirling Dun in The Complete Angler (1676), but historians are undecided on the insect that it imi­tates. A great variety of Whirling Duns have been pub­lished since Cotton, and the diversity of insects they imitate make “Whirling Dun” almost a gen­eral style rather than a specific pattern. Common features of Whirling Duns include a relatively large body size, an upright profile of divided wings suggesting may­flies, a brownish yellow, yellowish gray, or gray body color, and ginger or dun hackle. Theo­­dore Gor­don noted so many Whirl­ing Dun de­signs – including four when visit­ing a single fly shop – that he collected them as exam­ples of varia­tion in fly tying. Imitationists ar­gue that the diver­sity of flies imitates the diversity of natu­ral may­flies. Presen­ta­tion­ists argue that the flies are in­ter­change­able and that each is suc­cess­ful in skilled hands.

George La Branche’s favorite Whirling Dun is similar to Hendrickson and Quill Gor­don mayflies. Patrick McCafferty, whose book Aquatic Entomology (1981) is the definitive work on North Amer­i­can may­flies, identi­fied Whirling Duns as two species of the genus Lepto­phle­bia (common names Whirling Dun, Whirling Blue Dun, Blue Quill, Borcher’s Drake, Black Quill, Brown Quill, and Pale­foot). If you see mayflies on the wing and view your­self as an imitationist, select a matching fly from one of the many fly boxes in your vest. If, on the other hand, you view yourself as a pre­sen­ta­tionist, grab a Whirling Dun from the lone box in your shirt pocket and take plea­sure in George La Branche’s back-to-basics sim­plicity.

Copyright 2024, Rusty Dunn


Whirling Dun

La Branche concluded that a forward tilt of the wings improves effectiveness of the Whirling Dun.

Hook:

Dry fly, #10 – #12

Thread:

Yellow

Wings:

Starling or duck quill slips, upright, divided, and tilted forward ~30º toward the eye

Tail:

Ginger or light brown hackle fibers

Tag:

Two turns of flat gold tinsel

Body:

Muskrat underfur or mole fur

Hackle:

Ginger or light brown rooster, hackled heavily for turbulent waters